A quantity which requires magnitude and direction to be specified is

The quantity which requires magnitude and direction to be specified is displacement. Displacement refers to the distance between an object's initial position and its final position. It is a vector quantity because it has both magnitude (the distance between the initial and final position) and direction (the direction from the initial position to the final position). For example, if a car travels 10 kilometers north and then 5 kilometers east, its displacement would be the straight-line distance from its starting point to its ending point, which would be the square root of (10^2 + 5^2) = 11.18 kilometers, at an angle of approximately 26.6 degrees north of east. In contrast, distance, temperature, and mass are scalar quantities that only require magnitude to be specified, not direction. Distance refers to the total amount of space covered by an object, temperature is the degree of hotness or coldness of a body, and mass refers to the amount of matter in an object.